dieselperformance

dieselperformance
Newsletter Issue 14
• more
power & torque
• improved
fuel economy
• 3 year
aftersales support
• 0% interest free credit
now available
Summer 2008
hen it comes to motoring, good news has been in short supply of late, especially over
the past few months with fuel prices reaching an all time high. However, here at Tunit
we have been seeing some fantastic results, and for those of you that want the adrenaline
rush of extra bhp and torque, you can also get a similar feeling when paying for fuel
at the pump. With a tunit fitted you are en route to improved fuel economy and
a heavier wallet.* Read on to learn more about our latest and most impressive tunes,
featured customers, and those that have been so impressed with their fuel savings they felt
compelled to write in to us.
research and development - fuel economy
Over the past few months Tunit’s research and development team have been working hard to gain maximum
improvement in mpg, and with diesel fuel prices reaching an all time high of over
£6 per gallon we realise that everyone is feeling the pinch.
Not only have we been working to gain all Tunit users
maximum improvement in fuel economy, we are
supporting a campaign to reduce fuel costs through a
petition that will be delivered to 10 Downing St.
To have your say visit www.fuelpetition.co.uk and join
the fight to lower fuel prices.
*Fuel economy will vary depending on driving style and conditions
Tunit :: leigh Street :: chorley :: lancashire :: PR7 3DS :: www.tunit.com :: [email protected] :: t: 01257 274100
the power of torque
What is torque? What makes it different to horse power? Why would you want better
torque? Why is it important to diesel vehicles?
An engine’s output is rated in horsepower and torque. Torque is the pulling power, and
it’s best demonstrated as the grunt that gets you moving, whilst horsepower is what
keeps you going. Torque is the twisting force created in an engine by rotating parts,
whilst horsepower is the measurement of how fast torque is being used. Horsepower and
torque work together, as horsepower is calculated from torque.
When you get the feeling of your eyes being sucked into the back of your head in a fast
car during a heavy right-foot pounding: that’s an example of excessive torque, and with a
tunit fitted to your diesel you can expect that very same feeling.
Fitting a tunit to a diesel-powered vehicle helps to eliminate flat spots and improve off-the-mark acceleration. This in turn
makes for a greener drive due to lower engine rpm thus fewer emissions.
fuel savings reported by tunit customers
Many customers have been reporting in excess of the 7-10% improvement in
fuel economy we conservatively quote, with people gaining as much as a 20%
increase in mpg (improvements in fuel economy vary depending on individual
driving style).
But don’t just take our word for it...here are just a few of the testimonials you
will find on www.tunit.com and www.loveyourdiesel.com:
Paul Davies, VW Caddy 2.0 TDI
“I was getting around 43mpg as standard over around 10,000 miles. This rose
to 44-45mpg with the K&N air filter and is now up to 48mpg with the tunit...if I
weren’t in such a rush all the time 50mpg would be possible.”
Ray Massey, Kia C’eed 2.0 CRDi
“Before: My vehicle currently has 2000 miles
on the clock and manages 40 mpg.
After: 50mpg+
“Overall the car’s performance has
been transformed completely, with the
added bonus of improved economy.”
P Hunt, BMW 330D
“...it feels as though I have had a
completely new, more powerful engine
fitted, as the power range through the
gearbox (auto) is smoother and about 30-40%
quicker!!! To make matters even more impressive,
I have noticed approx. 12 mpg gain. This is a true reading on my on-board-computer, and I have now worked out that it will
take me about 6-7 months of driving to ‘get-my-money-back’ on this faultless unit! What more can I say: absolutely thrilled with
the product and I would recommend it to everyone.”
Lee Henrys, Citroën C5 2.0 HDi
“Since the fitment of the Tunit V-CR to my Citroën I have noticed a
marked increase in fuel economy, performance and refinement.
At a steady motorway cruise the average consumption has improved
from 40 mpg to in excess of 50 mpg. Performance has also increased
and the added midrange torque makes overtaking swifter and safer.
I am delighted with the result, especially as I fitted the tunit to
enhance performance rather than economy. The added benefit of
being able to transfer the tunit to another vehicle in the future is the icing
on the cake.”
*Fuel economy will vary depending on driving style and conditions
our tunes
No, we’re not dragging up Simon Bates from the ‘80s, we’re talking about some recently tuned vehicles that have taken even
the Tunit staffs’ breath away. This is what our own people had to say about some of the most outstanding recent tunes.
Michael Bromley: Audi A5 3.0 TDI
“Over 10 days and approximately 1,600 miles, I achieved surprisingly
good fuel economy of 27 mpg on rural and ‘A’ roads, reaching 40.5 mpg
on motorways at a steady 80mph. Surprising for a big engined, heavy
coupe with 4WD! Improving on this was just a matter of trial, error and
experience. It’s all about torque and knowing where and when
to deliver it. After several days we had a result worth writing about:
36.6 mpg rural & urban and 45.5 mpg on motorways, again at a steady
80mph using cruise! Overall the drive was much improved and we now
roll out this programming on each new tunit. I will be travelling over
25000 miles this year and my particular fuel savings will be
in excess of £650.”
Daniel Johnston: Saab 9-3 1.9 TTiD
“As soon as I heard that one of our local Saab dealers was bringing us a Twin Turbo Diesel
9-3 soft top, I couldn’t wait! With 180bhp and 295lbs/ft, and a 0-60mph time of 8 seconds
along with 50 mpg, compared to the 2.0T Aero petrol giving 210bhp and 221lbs/ft, 0-60 in
7.4 secs and 34mpg on average, I was keen to see how the two differed in terms of
drivability and responsiveness.
“On our initial dyno test on the diesel, which was an 08 plate with about 750 miles on the
clock, saw figures of 178.7bhp with 283lbs/ft. Similar to what I thought, what with the
engine still being quite tight and not properly run in. With the tunit installed and a few
tweaks, the TTiD was achieving 235.9bhp, but more importantly, 337.5lbs/ft of torque!
I couldn’t wait to get it out in the road!
“The power delivery was instant and seamless. No lag at all! I am almost positive that from standing, the TTiD could easily beat
the 2.0T petrol, to 60 and beyond! Having owned a few petrol turbo cars before, I know they can suffer really badly from turbo
lag, especially under 3,000rpm. The TTiD had instant power all the way from 1,200rpm right the way to the red line. I have
rarely driven a car that felt as good, aside from a BMW 335d. The customer who owns the car has since reported an 8% increase
in overall miles per gallon as well!”
John Barker: DAF LF Horsebox, 5.9 Cummins
“I have a customer who builds horseboxes (he has supplied one to Katie Price AKA Jordan).
Recently he came in with his latest horsebox creation, having just started using trucks
from the Daf stable, notably the CF/LF versions with the 5.9 Cummins diesel engine.
Bob wanted to see if we could give him more power, as the hill near his premises
was often a struggle in 2nd gear with horses on board.
Any savings in fuel economy were also welcome. We fitted the
tunit and off he went. The tunit was fitted in standard settings and
he rang me to say it was better, but having heard about the laptop
tuning facility he was now wondering what else Tunit could achieve
with his vehicles. I looked at the settings and made a few adjustments
which resulted in a wider spread of power and even allowed him to get up the
dreaded hill in 4th gear! He has since told us that his fuel economy has almost reached teenage
figures (12.7) and he is delighted with the improved drive of the thoroughbred Daf.”
all about aftercare
Not only do we offer improved bhp, torque and fuel economy*, but we pride ourselves on
the service we offer. Our aftercare service ensures you get the most out of your tunit.
Our staff are always on hand to answer any queries or concerns, and provide any general
help and assistance you may require. Our aftercare service includes:•Three year warranty
•Two year part exchange and upgrade help
Warranty
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Tunit :: leigh Street :: chorley :: lancashire :: PR7 3DS :: www.tunit.com :: [email protected] :: t: 01257 274100
featured customer
This month’s featured customer is Stav, Staff Writer for Redline Magazine:
Recently Redline Magazine acquired a Toyota Auris SR180 2.2 turbo diesel to race in the
Toyota Sprint Series, and one of the first things they wanted was more performance.
The standard power band is very small with the rolling road graphs showing it is over
150bhp for only around 1000rpm band, and over 250lb/ft for not much more, making
it really easy to fall out the power band and making it necessary to change gear
constantly, if you want to extract the maximum power.
Once the tunit was installed things changed massively, with the power figure jumping
by over 10bhp but most importantly the torque rose to over 50lb/ft just by the initial
installation of the tunit.
The dyno run showed that the power and torque delivery, although improved, had room to be bettered at the top end of the rev range.
The peak power also showed potential to be lengthened, meaning less gear changes. So the tunit then underwent a few parameter changes
on the laptop, and the car was transformed once again.
The final figures settled on were 190.5bhp and 346lb/ft, a massive increase of 27bhp and 65lb/ft; all with no increase in boost pressure.
Maybe more important than the newfound power levels is the massive extension to the power band, with it being above 250lbft and for
around twice as long as before, and now it is over 150bhp from just over 2000rpm right until the 5000rpm red line.
In Stav’s own words: “On the road the car has been transformed, meaning the overall driving experience is much easier and more responsive;
while the massive torque really makes itself known. Overtaking is now an absolute breeze, and tested against friends cars the Auris is now
able to keep up with modified 200SXs and even a Porsche 996 Carrera 4 from a rolling start up until around 100mph, which is fantastic for a
diesel, though with almost 350lb/ft it is not surprising!”
An added bonus that is rarely expected when increasing performance is the car averages around 5 more miles to the gallon, and spends far
less time at full throttle. This is partly due to the increased power and torque meaning acceleration to the speed you require takes a far shorter
time than previously.
On the track the increased performance has made coming out of slow corners far easier due to increased response, meaning you no longer
have to put your foot down early and predict when the boost comes in. The extra straight line speed is obvious, with the car gaining an extra
5-10mph on even the short straights of the tracks the sprint series is held on. Stav added:
“The massive torque means the car now rockets out of corners, and we are looking forward to racing the car in future rounds on sticky
track tyres that will really make the most of the power tunit has provided!
“Overall we couldn’t be happier with Tunit, and will shortly performance test the car with and without the tunit
module fitted to demonstrate the massive difference to acceleration that has been made.”
top 5 tunes
Here are the most popular tuned vehicles from
the last 3 months, compiled from worldwide
sales in 10 countries.
dieselperformance
performance
centres
tunit-
tunitaberdeen
0845 838 1364
[email protected]
tunit-
tunitderbyshire
0845 838 1027
i n f o @ t u n i t t y n e a n d w e a r. c o . u k
Chesterfield, Derbyshire
w w w. t u n i t d e r b y s h i r e . c o . u k
tunit
tyne and wear
0845 838 1409
tunit-
tunitlincolnshire
0845 838 1058
1. Nissan Navara 2.5 dCI D40
2. Toyota Hilux 3.0
3. BMW 320d
tunit-
[email protected]
tunit-
tunit-
tunitlondon
0845 838 1407
tunitglasgow
0845 838 1064
Drivers Ltd, Glasgow
i n f o @ t u n i t g l a s g o w. c o . u k
tunitfife
tunit
northern ireland
0845 838 1374
Ian Getty Agencies, Ballymena
[email protected]
[email protected]
tunit-
tunitsuffolk
0845 838 1058
tunit-
tunitlancashire
0845 838 1405
info@tunitsuffolk .co.uk
Chorley, Lancashire
[email protected]
tunitfife
4. Citroen C5 2.2 HDI
tunitbirmingham
0845 838 1056
[email protected]
5. Ford Mondeo 2.0 TDCi
tunit-
tunitleicester
tunit
leicester
0845 838 1057
i n f o @ t u n i t l e i c e s t e r. c o . u k
tunitfife
tunitireland
+353 57 9320333
To t a l To r q u e L t d , Tu l l a m o r e , O f f a l y
[email protected]
tunitfife
tunitwarwickshire
0845 094 4749
[email protected]
tunit-
tunitreading
tunit
reading
0845 838 1054
tunit-
tunitsussex
0845 838 1039
[email protected]
With our nationwide network of dealers you will be able to
find someone to specifically fit and programme your tunit for
exactly what you want to achieve, or for the DIY enthusiast
you can order online at www.tunit.com and fit it yourself!
tunit-
tunitdevon
0845 838 1053
[email protected]
Horsham, Sussex
info@tunitsussex .co.uk
tunit-
tunitdorset
0845 838 1052
Poole, Dorset
info@tunitdorset .co.uk
performance diesel tuning for all late cars,
light commercials and trucks
www.tunit.com [email protected] tel:0845 838 1405
please quote DCR1207 when you call
Tunit :: leigh Street :: chorley :: lancashire :: PR7 3DS :: www.tunit.com :: [email protected]
:: t: 01257 274100